72D Auto Connect MMM Height?

[Nuru]

The mowing height on my 72D Auto Connect MMM is very low (~2") and it seems that it cannot get any higher. anyone else have this issue and resolved it?

 

[BigMike50]

The mowing height on my 72D Auto Connect MMM is very low (~2") and it seems that it cannot get any higher. anyone else have this issue and resolved it?

yes I had this issue. even sent it back with no luck. decided to thumb through the deck manual and figure it out on my own since the dealer techs don't have a clue. I found that it was way out of adjustment. There is specs on how far the lift arms are to come into contact with the fuel tank guard if you have a cab, I found I had a couple inches to raise and adjusted the lift arms. Tomorrow im gonna remove the loader and install the deck so ill get some pics and specs for you. very simple adjustment. I think my deck raises about 4 inches off the ground with turf tires. Actually im 99 percent sure because I took measurements for someone else

 

[Rockgod]

Same here. R3 = 4". The deck height will adjust from 1 1/2"-5" depending on the tire height.

NURU, If I had to guess either your R3 specials are a little shorter that our regular R3, or something isn't adjusted right. Like I mentioned in the another thread, the lift arms should be no more than 1-2mm off the guards..

 

[Nuru]

yes I had this issue. even sent it back with no luck. decided to thumb through the deck manual and figure it out on my own since the dealer techs don't have a clue. I found that it was way out of adjustment. There is specs on how far the lift arms are to come into contact with the fuel tank guard if you have a cab, I found I had a couple inches to raise and adjusted the lift arms. Tomorrow im gonna remove the loader and install the deck so ill get some pics and specs for you. very simple adjustment. I think my deck raises about 4 inches off the ground with turf tires. Actually im 99 percent sure because I took measurements for someone else

Those pics will sure help. I will also take a pic of mine at full transport height.

 

[Nuru]

Same here. R3 = 4". The deck height will adjust from 1 1/2"-5" depending on the tire height.

NURU, If I had to guess either your R3 specials are a little shorter that our regular R3, or something isn't adjusted right. Like I mentioned in the another thread, the lift arms should be no more than 1-2mm off the guards..

My Turf Specials are 41" high and the non-autoconnect decks work fine and I get plenty of clearance. But with this deck, it only raises up to about 2" of cutting height and I have to force my shoe beneath the deck (while it is off ). Definitely not right.

 

[FatSlob]

Someting needs adjust

 

[Nuru]

Those pics will sure help. I will also take a pic of mine at full transport height.

Here are some pics at the current full transport height.

 

[thatguy]

Just to clarify - when you say 2" are you measuring blade to ground or edge of deck to ground?

Honestly I dont think anyone at any JD dealerships knows how to set up the 62D/C or 72D decks.. I have R4 tires and I am CUTTING at about 4 to 4.5" in the highest position control setting (adjustment knob on the 2320) - transport height is several inches higher

Brian

 

[Nuru]

Just to clarify - when you say 2" are you measuring blade to ground or edge of deck to ground?

Honestly I dont think anyone at any JD dealerships knows how to set up the 62D/C or 72D decks.. I have R4 tires and I am CUTTING at about 4 to 4.5" in the highest position control setting (adjustment knob on the 2320) - transport height is several inches higher

Brian

Blade height, the edge of the deck is lower, as in 1"? I am beginning to think based on the comments in the forum that you may be right.

 

[BigMike50]

Ok, so it seems I have almost 5 inches of height. Mine is adjusted so well that the auto connect feature works 99 percent of the time. The second picture shows how I can just barely fit my finger between the lift arm and fuel tank skid plate. The last picture shows where to adjust the lift arms. adjust both sides at same time. It will require you to remove and attach the deck several times till you get it right. You may have to adjust the drag on the front attaching hardware as well. If you get stuck doing this, I will have to scan my mower deck manual for you and send it to you. I can already see by your pictures where the lift arm meets the fuel tank skid plate that the delaer really screwed up the install. Freakin typical of those idiots. You have a ton of adjustment left

 

[BigMike50]

double post delete

storms comin

 

[Nuru]

Ok, so it seems I have almost 5 inches of height. Mine is adjusted so well that the auto connect feature works 99 percent of the time. The second picture shows how I can just barely fit my finger between the lift arm and fuel tank skid plate. The last picture shows where to adjust the lift arms. adjust both sides at same time. It will require you to remove and attach the deck several times till you get it right. You may have to adjust the drag on the front attaching hardware as well. If you get stuck doing this, I will have to scan my mower deck manual for you and send it to you. I can already see by your pictures where the lift arm meets the fuel tank skid plate that the delaer really screwed up the install. Freakin typical of those idiots. You have a ton of adjustment left

I have the manual too, thanks for the pics. I will have to try out what you are saying and see how well I can adjust the deck. I did not believe that JD would design a deck that would only fit on the tractor so low. Unless there is something drastically different with the mounting about the 2008 vs the 2012 3520s? I do have the front 3PT hitch installed, could that actually make a difference, as the front of the deck is pretty low as you can see from the pics. My dealership has been excellent sofar, and they were very helpful in installing the non-drive over deck that I still have.

BTW, can you take a pic of your mower mount from the front end view like I did?

 

[BigMike50]

I have the manual too, thanks for the pics. I will have to try out what you are saying and see how well I can adjust the deck. I did not believe that JD would design a deck that would only fit on the tractor so low. Unless there is something drastically different with the mounting about the 2008 vs the 2012 3520s? I do have the front 3PT hitch installed, could that actually make a difference, as the front of the deck is pretty low as you can see from the pics.

no the 3pt wont make a difference buddy. You need to adjust the rear links. after you do that, check the measurements on the front and rear of the deck to make sure it is level. If the rear is good after adjust ing the rear links and the front is too low, adjust the front drag links. Your machine is just out of adjustment. once we get this fixed you will be good to go. I don't think you will have to touch the front links though. I think that only affects the auto connect adjustment but start with the rears and report back

 

[Rockgod]

After looking at the 1st picture I see room between the lift arm and the stop. Like Mike said, adjust those rear lift arms up. Again, there should only be 1-2mm worth of spacing at transport height.

 

[Nuru]

no the 3pt wont make a difference buddy. You need to adjust the rear links. after you do that, check the measurements on the front and rear of the deck to make sure it is level. If the rear is good after adjust ing the rear links and the front is too low, adjust the front drag links. Your machine is just out of adjustment. once we get this fixed you will be good to go. I don't think you will have to touch the front links though. I think that only affects the auto connect adjustment but start with the rears and report back

OK, I did my first adjustment and I got almost 3" of cutting height now. I also think I know why the dealers are having so much trouble. The manual states that the that the PTO coupler should be adjusted so that it is parallel to the lower plate of the coupler. If they don't read this in the manual and allow it to dip below that lower plate lip, then it can be very hard to get the coupler to work correctly and you cannot attach the deck.
I plan to adjust the deck up higher next weekend. The cut I just finished on my lawn is way better that it was at the lower setting.

Thanks for all the assistance everyone!

 

[Nuru]

After looking at the 1st picture I see room between the lift arm and the stop. Like Mike said, adjust those rear lift arms up. Again, there should only be 1-2mm worth of spacing at transport height.

Yep, you are correct.

 

[Nuru]

OK, got them up to 4.5" of height. Thanks for the advice everyone!